Zero Delay Predictor Signal Synchronization System and Method

ABSTRACT

A method of synchronizing a remote device to image acquisition by a camera body including detecting a predictor signal of the camera body that occurs a known time prior to shutter opening and using that predictor signal to determine a synchronization time for synchronizing a remote lighting device. Wireless communication is used to synchronize the remote lighting device at the synchronization time. The determining of a synchronization time may occur before or after the wireless communication to the remote lighting device.

RELATED APPLICATION DATA

This application is a continuation application of U.S. patentapplication Ser. No. 15/237,390, filed Aug. 15, 2016, and titled“Wireless Photographic Communication System and Method,” which is acontinuation of U.S. patent application Ser. No. 14/456,691, filed Aug.11, 2014, and titled “Zero Delay Photographic Synchronization System andMethod,” which is a continuation application of U.S. patent applicationSer. No. 13/016,345, filed Jan. 28, 2011, and titled “Zero DelayPhotographic Synchronization System and Method,” which is a continuationapplication of U.S. patent application Ser. No. 11/490,322, filed Jul.20, 2006, and titled “Wireless Photographic Communication System andMethod,” each of which is incorporated by reference herein in itsentirety. This application also claims the benefit of priority of U.S.Provisional Patent Application Ser. No. 60/701,451, filed Jul. 20, 2005,and titled “Wireless Photographic Communication System and Method”,which is incorporated by reference herein in its entirety.

FIELD OF THE INVENTION

The present disclosure generally relates to the field of photography. Inparticular, the present disclosure is directed to a wirelessphotographic communication system and method.

BACKGROUND OF THE INVENTION

Previously, a user of a camera body that desired to add wirelesscommunication capabilities to a camera would have to use either anexternal or internal module to modify the camera so as to provide suchcapabilities. An internal wireless module may be mounted inside the bodyof the camera, thus providing wireless capabilities with as little as anantenna visible from on the outside of the camera body. However, aninternal wireless communication module may require some disassembly ofthe camera body itself for installation. Typical external wirelesscommunication devices generally include a transmitter, receiver, and/ora transceiver in a body that requires some form of connectivity to thecontrols of the camera body to provide the camera body with the wirelesscommunication functionality. Typically, an external wirelesscommunication device remains separate from the camera body and useswires to connect to a port of a camera. This type of external wirelesscommunication device may require physical attachment to some part of thecamera or its surroundings. This may be accomplished by tape, Velcro, orother aesthetically and physically unappealing techniques. Existingexternal wireless communication devices also have their own powersupplies. The power supplies typically add to the size and mass of themodule. The wires add to the complication and external bulk of using theexternal module. Another example of an external wireless communicationdevice may be mounted in the hotshoe of a camera. The hotshoe onlyprovides access to shutter synchronization. The hotshoe is typicallyreserved for a flash module, thus, when a wireless communication moduleis inserted therein, the hotshoe is unavailable for a flash or otherdevice. Additionally, the hotshoe does not provide access to a powersupply of the camera body. Thus, a hotshoe connected wirelesscommunication module still requires its own power supply. It would bedesirable to have a more compact, elegant, and directly connected modulefor providing wireless communication capability to a camera. It is alsodesirable to have a wireless communication module that leaves thehotshoe of the camera free to receive other devices, such as a flash.

SUMMARY OF THE INVENTION

In one implementation, a method of synchronizing a remote lightingdevice to image acquisition by a camera body is provided. The methodincludes detecting a predictor signal of the camera body via an externalport of the camera body, the predictor signal occurring at a known timeprior to a shutter of the camera body opening; determining asynchronization time for synchronizing a remote lighting device, thedetermining including use of the predictor signal and an amount of timebetween the predictor signal and the shutter opening; wirelesslycommunicating a synchronization information to the remote lightingdevice after the detecting a predictor signal; and synchronizing theremote lighting device to image acquisition at the synchronization time,wherein (a) the determining occurs before the wirelessly communicatingand the synchronization information includes a synchronization signal or(b) the determining occurs after the wirelessly communicating and thesynchronization information includes information based on the predictorsignal for use in the determining.

In another implementation, a system for synchronizing a remote lightingdevice to image acquisition by a camera body, the system comprising: ameans for detecting a predictor signal of the camera body via anexternal port of the camera body, the predictor signal occurring at aknown time prior to a shutter of the camera body opening; a means fordetermining a synchronization time for synchronizing a remote lightingdevice, the determining including use of the predictor signal and anamount of time between the predictor signal and the shutter opening; ameans for wirelessly communicating a synchronization information to theremote lighting device after the detecting a predictor signal; and ameans for synchronizing the remote lighting device to image acquisitionat the synchronization time, wherein (a) the determining occurs beforethe wirelessly communicating and the synchronization informationincludes a synchronization signal or (b) the determining occurs afterthe wirelessly communicating and the synchronization informationincludes information based on the predictor signal for use in thedetermining.

BRIEF DESCRIPTION OF THE DRAWINGS

For the purpose of illustrating the invention, the drawings show aspectsof one or more embodiments of the invention. However, it should beunderstood that the present invention is not limited to the precisearrangements and instrumentalities shown in the drawings, wherein:

FIG. 1 illustrates exemplary external ports on one example of a camerabody;

FIG. 2 illustrates exemplary external ports on another example of acamera body;

FIG. 3A illustrates a first view of exemplary external ports on yetanother example of a camera body;

FIG. 3B illustrates a second view of the exemplary external ports;

FIG. 4A illustrates a first view of one example of a wirelesscommunication module, FIG. 4B illustrates a second view of the examplewireless communication module in proximity to an example camera, FIG. 4Cillustrates the example wireless communication module directly connectedto the example camera;

FIG. 5 illustrates one example of a snap type connector;

FIG. 6A illustrates a first view of another example of a wirelesscommunication module, FIG. 6B illustrates a second view of the examplewireless communication module in proximity to an example camera, FIG. 6Cillustrates the example wireless communication module directly connectedto the example camera;

FIG. 7 illustrates yet another example of a wireless communicationmodule having an internal power supply;

FIG. 8A illustrates a first view of still another example of a wirelesscommunication module, FIG. 8B illustrates a second view of the examplewireless communication module in proximity to a first example camera,FIG. 8C illustrates the example wireless communication module inproximity to a second example camera;

FIG. 9 illustrates an exemplary rotatable pressure connector;

FIG. 10 illustrates an exemplary moveable pressure connector;

FIG. 11A illustrates a first view of an example camera body, FIG. 11Billustrates a first view of a further example of a wirelesscommunication module, FIG. 11C illustrates a second view of the examplewireless communication module, FIB. 11D illustrates the example wirelesscommunication module directly connected to the example camera body;

FIG. 12A illustrates a back view of an example camera having one exampleof a wireless communication module directly connected thereto, FIG. 12Billustrates a side view of the example camera with the example wirelesscommunication module directly connected thereto;

FIG. 13A illustrates a first view of yet a further example of a wirelesscommunication module having an example of a pass-through connector, FIG.13B illustrates a second view of the example wireless communicationmodule;

FIG. 14A illustrates a first view of still a further example of awireless communication module having an exemplary external control, FIG.14B illustrates a second view of the example wireless communicationmodule;

FIG. 15A illustrates a first view of yet still a further example of awireless communication module,

FIG. 15B illustrates a second view of the example wireless communicationmodule;

FIG. 16A illustrates one example of a wireless communication module inproximity to an example camera, FIG. 16B illustrates the examplewireless communication module directly connected to the example camera;

FIG. 17 illustrates a variety of exemplary wireless communicationapplications;

FIG. 18 illustrates an example voltage plot;

FIG. 19 illustrates one example of a wireless communication modulehaving an example of an audio reception device;

FIG. 20 illustrates an example of a voltage plot and an example of anaudio amplitude plot;

FIG. 21 illustrates yet another example of a wireless communicationmodule directly connected to an example camera body; and

FIG. 22A illustrates one example of exemplary external portconfiguration, FIG. 22B illustrates another example of exemplaryexternal port configuration.

DETAILED DESCRIPTION

It is often desirable to provide wireless communication capability to acamera. A wireless communication module is provided for enabling acamera to wirelessly communicate with a remote device. In one example, acamera body may communicate wirelessly with a remote device for manypurposes, such as controlling the remote device, sending information tothe remote device, receiving information from the remote device, beingcontrolled by the remote device, and any combinations thereof. Wirelesscommunication may occur over any of a variety of well knowncommunication techniques. Examples of wireless communication techniquesinclude, but are not limited to, radio frequency (RF), optical, and anycombinations thereof. Various aspects of wireless communicationtechniques, including encoding of wireless signals, are discussed inU.S. Pat. No. 5,359,375 to Clark, issued on Oct. 25, 1994, which isincorporated herein by reference in its entirety. Examples of remotedevices include, but are not limited to, a light source, such as a flashor continuous light source; a camera; a light meter, such as a lightintensity or light color spectrum meter; a general computing device,such as a personal computer or handheld computing device; and anycombinations thereof.

In one embodiment, a wireless communication module includes atransmitter, a receiver, and/or a transceiver for providing wirelesscommunication with a remote device. A wireless communication module alsoincludes one or more pressure connectors directly on the body of themodule for connecting the module to one or more ports of a camera body.In one example, the one or more pressure connectors are integral withthe shape of the module body. The one or more pressure connectors may beintegral with the shape of the module body in many ways including, butnot limited to, by molding one or more pressure connectors uniformlywith the body itself, by attaching one or more pressure connectorsdirectly to a surface of the module body, and any combinations thereof.In another example, the one or more pressure connectors include a maleportion that protrudes directly from a surface of the module body. Themale portion is sized and configured for direct insertion into a port ofa camera body. In yet another example, the one or more pressureconnectors include a female portion designed to mate with a male portelement of a camera body. In one aspect, pressure can be applied to themodule body to cause the one or more pressure connectors to connect withone or more ports of a camera body. Wires between the wirelesscommunication module and the camera are unnecessary and use of thecamera hotshoe is not required. This allows for compact and elegantdesigns that conform directly to a camera body in a manner notpreviously available.

FIGS. 1, 2, 3A and 3B illustrate examples of camera bodies to which anexample wireless communication module may be connected. It should benoted that these example bodies only represent a small percentage of thevarious camera bodies known to those in the art. FIG. 1 illustrates oneexample of a camera body 100. Camera body 100 includes two ports thatare common to camera bodies: a PC port or connector 110 and amotor-drive port 120 (e.g., a 10-pin female motor-drive port). A PCport, such as PC port or connector 110, is also known in the cameraindustry as a flash synchronization port and a synch port. As usedherein the term “PC” does not refer to a personal computer. PC port 110and motor-drive port 120 are typically on the front face of camera body100. Camera 100 also includes a hotshoe 130. Hotshoe 130 is typicallyused to attach an external flash device to camera 100. Depending on themanufacturer and model of a particular camera body, the external portsof the camera body may provide access to a variety of internal functionsand information. Also, the size, location, and relation to otherexternal ports may differ on camera bodies. In one example, a PC port,such as PC port 110, may provide access to a shutter synchronizationsignal indicating the activity of the camera shutter. Thissynchronization signal is present in cameras that have a physicalshutter as in many film and digital cameras and in cameras that have alogical shutter (e.g., as in some point-and-shoot digital cameras).Depending on the camera body, however, access to a shuttersynchronization signal may be provided by a different type of externalport. In another example, a motor-drive port, such as motor-drive port120, may provide access to internal functions including, but not limitedto, access to direct power that is available even when the camera bodyis turned off, access to electrical ground, access to switched power,access to serial communication with camera controls (such as RS-232communication and universal serial bus “USB” communication), access todata input functionality, communication with “half-press” pre-releasetrigger control, communication with “full-press” release triggercontrol, and any combinations thereof.

FIG. 2 illustrates another example of a camera body 200. Camera body 200includes a PC port 210, a motor-drive port 220 (e.g., a 3-pin femalemotor-drive port), a video out port 230, a universal serial bus (USB)port 240, and an IEEE 1394 (Firewire) port 250. In this example,motor-drive port 220 may or may not provide access to an internal powersupply of camera body 200. Firewire port 250 may provide access to aninternal power supply of camera body 200. In one example, firewire port250 provides access to a power supply having a current of about 2.5milliamps (mA).

FIG. 3A illustrates a front view of yet another example of a camera body360 having a PC port 370 and a 10-pin motor-drive port 380. FIG. 3Billustrates a side view of camera body 360. As can be seen in FIG. 3B,PC port 370 and motor-drive port 380 are offset from each other in onthe front side of camera body 360 and do not appear in substantially thesame vertical plane.

FIG. 4A illustrates a first side cross sectional view of one embodimentof a wireless communication module 400. Wireless communication module400 is shown including a module body 410 having a first pressureconnector 420 and a second pressure connector 430. Module body 410 isshown with rectangular sides. In other examples, a module body may takeany shape, size, and configuration (e.g., a shape, size, andconfiguration that suits the camera body to which a connection isdesired). In one example, a module body, such as module body 410, may beformed as a unitary unit. In another example, a module body, such asmodule body 410, may include a plurality of parts that are attached toeach other to form a single module body. In yet another example, amodule body may include protrusions in the body itself for aesthetic orfunctional purposes. Protrusion shapes may be utilized to fit a modulebody to a camera shape such as that in FIG. 3B, where the first andsecond ports are in different planes of the front side of the camerabody.

A module body (or parts of a module body) may be constructed of anymaterial. Examples of materials include, but are not limited to, a rigidplastic, a flexible plastic, a metal, glass filled nylon, and anycombinations thereof. In yet another example, a module body may includea flexible and/or articulateable portion (e.g., for allowing movement ofone pressure connector with respect to another and/or to allow one ormore pressure connectors of a module body to engage one or more ports ofa camera body). In still yet another example, a module body is shapedand configured to not obstruct access to external controls of the camerabody when the module body is connected to the camera. In a furtherexample, discussed in further detail below with respect to FIGS. 13A and13B, a module body includes one or more pass-through ports that allow auser to connect another device or connector to a pass-through port togain access to one or more of the external ports of a camera body towhich one or more pressure connectors are connected.

Each of first and second pressure connectors 420 and 430 are on a sideof module body 410. In this example, two pressure connectors are shown.However, it is contemplated that any number of one or more pressureconnectors may be present in a wireless communication module, such aswireless communication module 400. In one example, one or more pressureconnectors are present on the same side/surface of a module body. Inanother example, two or more pressure connectors are present on aplurality of sides/surfaces of a module body. A pressure connector mayinclude male, female, and/or a combination of male and femalecomponents. In one example, as shown in FIG. 4, a pressure connector mayprotrude from an outer surface of a module body of a wirelesscommunication module. In another example, a pressure connector (e.g., apressure connector with one or more female components) may be flush withand/or protrude into an outer surface of a module body of a wirelesscommunication module.

Module 400 also includes a transmitter 440 therein for communicatingwirelessly with a remote object. In an alternate example, module 400 mayinclude any known wireless communication circuit in place of transmitter440 that may allow wireless communication to and/or from a remotedevice. Example wireless communication circuits may include, but are notlimited to, a transmitter, a receiver, a transceiver, and anycombinations thereof. In one example, a wireless communication moduleincludes a receiver for receiving information from a remote device andcommunicating the information to a camera body to which the module isconnected. In another example, a wireless communication module includesa receiver for receiving information from a remote device and atransmitter for transmitting information to a remote device. In yetanother example, a wireless communication module includes a transmitterfor transmitting information to a remote device. In still yet anotherexample, a wireless communication module may include a transceiver forreceiving information from a remote device and transmitting informationto a remote device. Several examples discussed herein cover a modulehaving a transmitter. It should be understood that various combinationsexist, including, but not limited to, the transmitter in these examplesbeing accompanied with a receiver, replaced by a receiver, or replacedby a transceiver. It is contemplated that the transmitter element of anyof the various embodiments covered herein may actually be satisfied bythe use of a transceiver element that includes both a transmitter andreceiver component. One example of a transceiver includes a ADF7020-1model transceiver available from Analog Devices of Norwood, Mass. Otherexamples of a transmitter, a receiver, and/or a transceiver may beutilized with a wireless communication module.

Transmitter 440 may be in direct or indirect electrical communicationwith first and second connectors 420 and 430. Transmitter 440 is also inelectrical communication with an antenna 445 for providing wirelesscommunication to a camera with a remote device.

An antenna, such as antenna 445, may be internal or external to a modulebody, such as module body 410. In one example, an antenna is integrallymolded with the module body. In another example, an antenna is moveablewith respect to the module body. Movement may be in any direction and beachieved by a variety of ways that are known for moveably connecting twopieces. In one example, an antenna may collapse into a module body. Inanother example, an antenna may fold into a module body. In yet anotherexample, an antenna may be removable from a module body (e.g., via ascrew mounting, a snap mounting, and/or other connector). In a furtherexample, where an optical wireless technique is used, an antenna mayinclude an optical sensor and/or an optical emitter. Example opticalsensors include, but are not limited to, an infrared (IR) sensor.Example optical emitters include, but are not limited to, an IR lightemitting device (LED).

FIG. 4B illustrates a second side view of wireless communication module400 positioned proximate a first external port 450 and a second externalport 460 of a camera body 470. Pressure connectors 420 and 430 areconfigured to connect to first port 450 and second port 460. In oneaspect, such a configuration may have pressure connectors 420 and 430shaped, sized, and configured to mate with first and second ports 450and 460. In one example, spacing of pressure connectors 420 and 430 issubstantially similar to the spacing of first and second ports 450 and460. In another example, spacing of pressure connectors 420 and 430 maybe modified via moving, flexible, and/or articulating parts, asdescribed below, such that the spacing may substantially match thespacing of first and second ports 450 and 460. Pressure connectors 420and 430 and ports 450 and 460 are each shown in FIG. 4 having a circularshape. It is contemplated that a pressure connector, such as pressureconnectors 420 and 430, may have any shape and/or configuration thatenables a direct connection to a desired port of a camera body. In oneexample, a pressure connector may include a male connecting element forconnecting to an external port of a camera body that includes a femaleconnecting element. In another example, a pressure connector may includea female connecting element for connecting to an external port of acamera body that includes a male connecting element. In yet anotherexample, a pressure connector may include a male and a female connectingelements for connecting to an external port of a camera body thatinclude a female and a male connecting elements.

Example ports of a camera body to which a wireless communication modulemay be connected include, but are not limited to, a synchronizationport, such as a PC port; a motor-drive port, such as a 10-pin or 3-pinmotor-drive port; a video input and/or output port; a Firewire port; aserial port, such as a USB port; an external power port, such as anexternal power port of a camera battery; and any combinations thereof.An example motor-drive port may have multiple pins and/or female pinreceptors that each provide access to one or more internal functionsand/or controls of a camera body. Internal functions and/or controlsthat may be accessed from a port of a camera body include, but are notlimited to, access to direct power that is available even when thecamera body is turned off, access to electrical ground, access toswitched power, access to regulated power, access to serialcommunication with camera controls (such as RS-232 communication anduniversal serial bus “USB” communication), access to data inputfunctionality, communication with “half-press” pre-release triggercontrol (in some examples referred to as “wakeup”), communication with“full-press” release trigger control (also known as “shutter release”),access to shutter synchronization information, access to internal memoryof the camera body; access to an internal processor of the camera body;access to various other controls of the camera body; and anycombinations thereof. In one example, when a port provides a pressureconnector (and corresponding wireless communication module) access to aninternal power supply of a camera, the wireless communication module mayutilize the internal power supply as a power supply for the functioningof the module including, but not limited to, poweringreception/transmission. In one example, a single port of a camera bodymay provide access to one internal function/control. In another example,a single port of a camera body may provide access to a plurality ofinternal function/controls. Throughout this disclosure, where a port isenumerated to give access to a particular one or more of an internalfunction/control, it should be understood that additional internalfunctions/controls may be also accessed by that same port. Camera body470 in FIG. 4 has two ports 450 and 460 that are on the same side ofcamera body 470. It is contemplated that ports of a camera body may beon different sides of the camera body and require a wirelesscommunication module body that is shaped and configured to connect toports on a plurality of sides of a camera body (e.g., configured with anarticulatable body similar to module body 1510 of FIG. 15 discussedbelow with an ability to flexibly wrap around two or more sides of acamera body).

In one example, first port 450 may be a port of camera body 470 thatprovides access to a shutter synchronization signal of camera body 470.An example of a camera port that provides access to a shuttersynchronization signal of a camera includes, but is not limited to, asynch port (also known as a PC port). In another example, second port460 is a port of camera body 470 that provides access to an internalpower supply of camera body 470. Example camera ports that provideaccess to an internal power supply of a camera include, but are notlimited to, a motor-drive port, an IEEE 1394 (Firewire) port, auniversal serial bus port, an external power port of a removable camerabattery, accessory port, and any combinations thereof.

FIG. 4C illustrates module body 410 connected to camera body 470. In oneexample, when module 400 is connected to camera body 470 via first andsecond connectors 420 and 430, a power supply internal to camera 470 mayprovide power to transmitter 440 via second port 460 and second pressureconnector 430. In another example, when module 400 is connected tocamera body 470 via first and second pressure connectors 420 and 430,transmitter 440 is in communication with shutter synchronizationinformation internal to camera body 470 via first connector 420. Camerabody 470 includes a lens 480 attached thereto.

A pressure connector, such as pressure connector 420 and/or pressureconnector 430, may provide direct connection of a module body to a portof a camera body in a variety of ways. In one example, a pressureconnector is sized and configured to fit snugly within, and/or around, aport of a camera body so that friction of the snug fit maintains theconnection. The size and configuration of a pressure connector willdepend on the size and configuration of a port of a camera body to whichthe pressure connector is designed to mate. In another example, one ormore pressure connectors of a module body, when connected to one or moreports of a camera body, provide a portion or all of the structuralsupport to hold the module in direct connection with the camera body(e.g., friction between one or more pressure connectors and the one ormore ports of the camera body and a level of rigidity of the materialsselected for construct of the one or more pressure connectors and/or themodule body of the wireless communication module may provide the onlystructural support necessary to hold the module in place in directconnection with a camera body). In yet another example, a pressureconnector may include a screw connect element that can provide a screwconnection to a port of a camera body. In still yet another example, apressure connector includes a button or other element to release theconnection with a port of a camera body. In a further example, apressure connector includes a snap-type connect element that allows thepressure connector to snap into a port of a camera body. Variousfriction fit, screw connection, and snap connection elements will beunderstood by those of ordinary skill in light of the presentdisclosure.

FIG. 5 illustrates a cross section of an example snap-type connectelement 500 for a pressure connector. Connect element 500 includes hookmembers 510 and 520. Male pins 530 of an example pressure connector arebetween hook members 510 and 520. Male pins 530 may provide electricalcommunication with female counterparts of a port of a camera body whenthe pressure connector is engaged with the port. It is contemplated thatmale pins 530 may be replaced by one or more female connector elementsdepending on the configuration of the port of the camera body to whichthe pressure connector is to engage. Hook members 510 and 520 include anangled end 540 and 550, respectively. In one example, pressure may beapplied to a module body of which connect element 500 is a part. Thepressure may cause connect element 500 to be inserted within, or come incontact with, a port of a camera body. In this example, angled ends 540and 550 may compress inward toward pins 530 as a pressure connectorcontacts the sides of a port of a camera body and make secure contactwith a surface of the port. Connect element 500 also includes connectionrelease element 560, which may be depressed inward to release thecontact of angled ends 540 and 550 with the surface of the port.

In another embodiment, a wireless communication module may bepermanently attached to a camera body. In one example, an outer coveringof a camera body (e.g., a rubber grip component of a camera body) may beremoved and a wireless communication module connected to one or moreports of the camera in an area proximate the removed outer covering. Themodule body of the wireless communication module may be sized shaped andconfigured to replace the removed outer covering. An adhesive, one ormore screws, or other permanent or releasable attachment techniques maybe used to adhere the module body to the camera body. In one example, amodule body may be contoured to provide a grip to the camera body. Inanother example, a module body may be configured to conform to thegeneral shape of the camera body and to not obscure access to cameracontrols.

FIG. 6A illustrates a first side cross sectional view of anotherembodiment of a wireless communication module 600. Wirelesscommunication module 600 includes a module body 610. Module body 610includes a first pressure connector 620 and a second pressure connector625, each on a side of module body 610. First pressure connector 620 isconfigured to connect to a first port 640 of a camera body 650. Secondpressure connector 625 is configured to connect to a second port

645 of camera body 650. In one example, first port 640 provides accessto a shutter synchronization signal of camera body 650 to wirelesscommunication module 600. In another example, second port 645 providesaccess to an internal power supply of camera body 650 to wirelesscommunication module 600. First and second pressure connectors 620 and625 are in communication with a transmitter 660. First pressureconnector 620 may be in communication with a shutter synchronizationsignal module 665 for receiving a shutter synchronization signal. Ashutter synchronization signal module (synchronization signal module)may include any necessary circuitry to receive and/or deliverinformation from/to a port of a camera body to a transmitter and/orprocessor of a wireless communication module. In one example, asynchronization signal module may include minimal circuitry (e.g., aslittle as a wired connection) sufficient to provide an electricalcommunication between a pressure connector and a transmitter and/orprocessor of a wireless communication module. In another example, ashutter synchronization signal module, such as shutter synchronizationsignal module 665, may include more detailed circuitry for communicatingdata to and/or from a port of a camera body to which a correspondingpressure connector is directly engaged (e.g., routing circuitry, amemory element, internal processing capabilities, machine readableinstruction, etc.). Second pressure connector 625 may be incommunication with a power management module 670 for receiving powerfrom a power supply internal to camera body 650 and providing the powerto module body 610. In one example, a power management module mayinclude any necessary circuitry to provide electrical communicationbetween a pressure connector and a transmitter and/or processor of awireless communication module (e.g., as little as a wired connection).In another example, a power management module may include more detailedcircuitry to provide power management to a wireless communication module(e.g., routing circuitry, a memory element, internal processingcapabilities, machine readable instruction, etc.) Power managementmodule 670 may be in communication with transmitter 660 for providingpower to transmitter 660. Shutter synchronization signal module 665 mayalso be in communication with transmitter 660 for providing informationto transmitter 660.

Optionally, module body 610 may include a processor 675 for processinginformation received and/or transmitted by communication module 600.Power management module 670 and shutter synchronization signal module665 may be in communication with optional processor 675. Processor 675may be in communication with transmitter 660. Transmitter 660 is incommunication with antenna 680 for wirelessly communicating with aremote device. In one example, a processor, such as processor 675, maybe used to encode transmissions from a wireless communication module andto decode transmissions received by a wireless communication module. Inanother example, a processor may manage information received wirelesslyby a wireless communication module, received from a camera body to whichthe module is connected, and any combinations thereof. Exampleprocessors include, but are not limited to, a microcontroller, a digitalsignal processor, a field programmable gate array, a programmable logicdevice (PLD), and any combinations thereof. A processor, such asprocessor 675 may utilize information, such as settings, algorithms,and/or software instructions (e.g. machine readable instructions),present in an optional memory element that is separate from and/orintegrated with the processor. One example of a processor includes aATMega168 model processor available from Atmel of San Jose, Calif.

FIG. 6C shows module body 610 in direct connection with camera body 650via first and second pressure connectors 620 and 625. As discussedabove, a module body may have any shape, size, and configuration to suitthe use with a particular camera body. In one example, module body 610may be contoured to form a grip suitable for a human hand in order toassist with holding camera body 650. Camera body 650 includes a lens 685attached thereto

Power for a wireless communication module, such as wirelesscommunication module 600, may be provided in a variety of ways. In oneexample, a wireless communication module, such as module 600, mayreceive power solely through one or more pressure connectors from apower supply of a camera to which the module is attached. FIG. 7illustrates one embodiment of a wireless communication module 700 thatincludes an internal power supply 705. Wireless communication module 700includes a module body 710 having a first pressure connector 720 and asecond pressure connector 725 each configured to connect with acorresponding external port of a camera body and to provide wirelesscommunication to and/or from a remote device to the camera body via atransmitter 760. First pressure connector 720 may be in communicationwith a shutter synchronization signal module 765. Second pressureconnector 725 may be in communication with a power management module770. In one example, shutter synchronization signal module 765 and powermanagement module 770 may be in communication with an optional processor775, as discussed above with respect to wireless communication module600. In another example, shutter synchronization signal module 765and/or power management module 770 may be in direct communication withtransmitter 760. Transmitter 760 is in communication with antennaelement 780 for wirelessly communicating with a remote device. Internalpower supply 705 is in communication with, and may be managed by, powermanagement module 770. Processor 760 may assist power management module770 in managing internal power supply 705 and/or power provided from aconnected camera body via second pressure connector 725. Examplemanagement of internal power supply 705 includes, but is not limited to,delivery of power to one or more components of wireless communicationmodule 700, recharging of internal power supply 705, dividing powersupply between internal power supply 705 and other power sources (e.g.,a connected camera body), and any combinations thereof. Examples ofinternal power supplies include, but are not limited to, a battery (e.g.a coin cell), a fuel cell, and any combinations thereof. An internalpower supply may be rechargeable. Example sources of power forrecharging an internal power supply include, but are not limited to,power from a connected camera body, an outside power source (e.g.,connection to a 110 V A/C outlet or low voltage A/C adapter). In oneexample, a module internal power supply may recharge via a tricklecharge from a camera internal power supply when the camera is in lowpower sleep (standby) mode. This is practical because cameras are oftensitting in standby mode for periods of many seconds to several minutesbetween photos.

Wireless communication module 700 may include an optional capacitor 785or similar module for storing power. Capacitor 785 may be a part of, ora separate circuit from, power management module 770. In one example,capacitor 785 may store power received from a camera power supply. Thismay be useful in an example where the camera power supply accessed bythe module is below what is required to operate a wireless communicationmodule on a full-time basis. An example of such a power supply having acurrent of about 2.5 mA power may be accessed via a Firewire port of acamera body. Capacitor 785 may store power and use it at selectintervals, such as when transmission is required or reception isdesired.

In another embodiment, internal power supply 705 may be removable.Module body 710 may include an optional door or compartment 790 forreceiving a removable internal power supply. A module body may alsoinclude an optional external connector 795 for connecting an externalpower supply, such as a standard 110 V A/C outlet or low voltage A/Cadapter, to the internal power supply for recharging the internal powersupply and/or providing alternate power to module 700. In one example,wireless communication module 700 may access power internal to a camerabody via a pressure connector, such as pressure connector 725, to a portof the camera body and also have its own internal/external power supply(e.g., internal power supply 705 and/or external power via externalconnector 795. In this example, the wireless communication module mayutilize the power supply of the camera, especially if the camera powersupply is a low current power supply, to maintain the generalfunctioning of the module and also utilize its own internal/externalpower supply during transmission from the module to a remote device.This example, may utilize smaller current from the camera without theuse of a capacitor. However, a capacitor in combination with thisexample is also contemplated.

A wireless communication module may also obtain power through a pressureconnector from a dedicated port of a camera body for providing powerand/or an external port of a battery pack associated with a camera body.FIGS. 8A, 8B, and 8C illustrate exemplary wireless communication module800 that is configured to connect to an external power port 805 (e.g., apower port providing access to an internal power supply) of a camerabody 810 and/or an external power port 815 of a battery 820 associatedwith camera body 810. FIG. 8A illustrates a first side view of module800 having a first pressure connector 825 and a second pressureconnector 830. FIG. 8B illustrates a second side cross sectional view ofmodule 800 in proximity to one example camera body 810. Camera body 810includes a first external port 835 and external power port 805. Wirelesscommunication module 800 includes a synchronization signal module 840 incommunication with first pressure connector 825 and a power managementmodule 845 in communication with second pressure connector 830, each ofwhich may be in communication with an optional processor 850.Synchronization signal module 840 and power management module 845 mayeach be in direct communication, or communication via processor 850,with a transmitter 860, which is in communication with an antennaelement 865 for wirelessly communicating with a remote device. Pressureconnectors 825 and 830 are configured to be brought into directconnection with first external port 835 and external power port 805,respectively. Power may be provided via second pressure connector 830from external power port 805 to wireless communication module 800. Othersignals (e.g., a shutter synchronization signal) may be provided towireless communication module 800 via the direct connection of firstpressure connector 825 and first external port 835.

FIG. 8C illustrates a side cross sectional view of module 800 inproximity to another example camera body 810 having a first externalport 835. Camera body 810 also includes an opening 870 for receiving aremovable battery 820 having an external power port 815 for providingaccess to power supplied by battery 820. In this example, pressureconnectors 825 and 830 are configured to be brought into directconnection with first external port 835 and external power port 815.Wireless communication module 800 may be configured to use power viasecond pressure connector 830 to power part or all of the functions ofthe wireless communication module. In one example, wirelesscommunication module 800 may also use the voltage from power of a camerabody to determine a shutter synchronization as discussed further below.In another example, the wireless communication module may also have oneor more additional pressure connectors that are configured to connect toone or more additional ports of the camera body as discussed herein.Camera body 810 also includes a lens 880 attached thereto.

A pressure connector for connecting a wireless communication module to acamera may be moveable with respect to each other and/or a module body.FIG. 9 illustrates one example of a wireless communication module 900having a module body 910. Module body 910 includes a first pressureconnector 920 and a second pressure connector 930. Second pressureconnector 930 is rotatably mounted so that it can rotate around itscenter. One example of a rotatable mounting includes a connector mountedin an opening in a module body and having a flex mounted circuit and/orflexible wire leads. It should be noted that first pressure connector920 may also be rotatably mounted instead of, or in addition to, secondpressure connector 930.

FIG. 10 illustrates another example of a wireless communication module1000 having a module body 1010. Module body 1010 includes a firstpressure connector 1020 and a second pressure connector 1030. Firstpressure connector 1020 is mounted so that it may move with respect tosecond connector 1030. In yet another example, second pressure connector1030 is mounted so that it may move with respect to first pressureconnector 1020. Movement of a pressure connector may occur in anydirection and be facilitated by any means of mounting one object withrespect to another. In a further example, a pressure connector ismoveable into and out from a module body while still remaining integralto the module body. One way to facilitate such movement includes the useof a spring element. Other examples of flexible mounting of a pressureconnector include, but are not limited to, use of a flex circuit thatallows a circuit element to move with respect to another circuitelement, a semi rigid spring wire bent to shape that can flex whilereturning to original position when not under tension, and anycombination thereof.

FIGS. 11A, 11B, and 11C illustrate a first and second side views of yetanother wireless communication module 1100 configured for directconnection to a camera body 1160. Wireless communication module 1100includes a module body 1110. Module body 1110 includes a first pressureconnector 1120, a second pressure connector 1130, and a third pressureconnector 1140. Wireless communication module 1100 also includes anantenna 1145. It should be noted that although wireless communicationmodule 1100 is shown from an external perspective that it may includeinternal circuitry (e.g., a transmitter, other elements, and supportingconnecting circuitry) consistent with, and as will be apparent from, thecurrent disclosure. First pressure connector 1120 is configured forconnection with a first external port 1150 of a camera body 1160. In oneexample, first pressure connector 1120 includes a PC connector. Secondpressure connector 1130 is configured for connection with a secondexternal port 1170. In another example, second pressure connector 1130includes a motor-drive connector. Third pressure connector 1140 isconfigured for connection with a third external port 1180. In oneexample, third pressure connector 1140 includes a Firewire connector. Afourth pressure connector 1190 may also be configured to connect to afourth port 1195 of camera body 1160. In one example, fourth pressureconnector includes a USB connector. FIG. 11D shows module body 1110 indirect connection with camera body 1160. In one example, third externalport 1180 is a Firewire port that provides power to wirelesscommunication module 1100 via third connector 1140. Various signalsand/or power as discussed above may be provided to wirelesscommunication module 1100 via any one or more of pressure connectors1120, 1130, 1140, and 1190. One or more of such signals may bewirelessly communicated to a remote device.

A wireless communication module may also include one or more externalvisual indicators for providing information about an internal status ofthe module. Example visual indicators include, but are not limited to, avideo screen, an LCD, an LED, a light, plasma display element, and anycombinations thereof. FIGS. 12A and 12B illustrate one example of avisual indicator 1210 configured on a surface of an antenna 1220 of awireless communication module. FIG. 12A shows the view of the back sideof a camera body 1230 having a wireless communication module connectedthereto. Antenna 1220 includes visual indicator 1210 having one or moreLED's that are visible to a user from behind camera body 1230. FIG. 12Bshows a module body 1240 of the wireless communication module connectedto camera body 1230. In one example, the one or more LED's may indicatea wireless communication channel utilized by a wireless communicationmodule. Camera body 1230 includes a lens 1280 attached thereto.

A wireless communication module may also include one or more passthrough ports in communication with a connector, as discussed above, forallowing a user to connect another device to the connector while thewireless communication module is connected to the camera. FIG. 13Aillustrates a first side cross sectional view of a wirelesscommunication module 1300 having a module body 1310 with a first moduleside 1315 and a second module side 1320. Module body 1310 includes onfirst module side 1315 a first pressure connector 1325 and a secondpressure connector 1330. First pressure connector 1325 is shaped, sized,and configured to engage a first port of a camera body to which wirelesscommunication module 1300 may be connected to provide wirelesscommunication capability to the camera body as discussed herein. Secondpressure connector 1330 is shaped, sized, and configured to engage asecond port of a camera body. First pressure connector 1325 is incommunication with a transmitter 1340, which is in communication with anantenna element 1345. A synchronization signal module 1350 is incommunication with transmitter 1340 and first pressure connector 1325.Second pressure connector 1330 is in communication with a powermanagement module 1355. An optional processor 1360 is in communicationwith synchronization signal module 1350 and power management module1355. Processor 1360 may provide information and power management, aswell as other processing functionality, for wireless communicationmodule 1300. Second module side 1320 includes a first pass-throughconnector 1365 and a second pass-through connector 1370.

First pass-through connector 1365 is sized, shaped, and configured tomatch the first port of the camera body for providing an ability toutilize the first port of the camera body when wireless communicationmodule 1300 is connected to the camera body. Second pass-throughconnector 1370 is sized, shaped, and configured to match the second portof the camera body for providing an ability to utilize the second portof the camera body when wireless communication module 1300 is connectedto the camera body. FIG. 13B illustrates a view of second module side1320 showing pass-through connectors 1365 and 1370. First pass-throughconnector 1365 is in electrical communication with first pressureconnector 1325 for providing electrical communication with a connectedport of a camera body. In one example, synchronization signal module1350 may include routing circuitry to properly route one or more signalsbetween first pass-through connector 1365 and first pressure connector1325 (e.g., routing information from the camera body to transmitter 1340and routing signals from a device connected to first pass-throughconnector 1365 through to first pressure connector 1325). Secondpass-through connector 1370 is in electrical communication with secondpressure connector 1330 for providing electrical communication with aconnected port of a camera body. In one example, power management module1355 may include routing circuitry to properly route one or more signalsbetween second pass-through connector 1370 and second pressure connector1330 (e.g., routing power from the camera body to provide power towireless communication module 1300 and routing signals from a deviceconnected to second pass-through connector 1370 to second pressureconnector 1330). Although, wireless communication module 1300 includes apass-through port for each pressure connector, it is contemplated that apass-through connector may be provided for less than all pressureconnectors of a wireless communication module.

In still another embodiment, a wireless communication module may includean audio element for providing an audio signal indicative of a state ofthe module. Examples of audio elements include, but are not limited to,a speaker, piezo buzzer, and any combinations thereof. A wirelesscommunication module may also include one or more external controls forchanging/controlling an internal state of the module. External controlsinclude, but are not limited to, a button, a trigger, a toggle, knob,joystick, and any combinations thereof. Examples of the internal statesthat may need changing and/or indication include, but are not limitedto, channel of operation, frequency of operation, device address,receive or transmit mode, type of camera that it will communicate with,and any combinations thereof. A visual and/or audio indication may beprovided in a variety of ways including, but not limited to, quantity ofindications, spoken word, a displayed image, a displayed character, andany combinations thereof. In another example, an internal state may bemodified using wireless communication to a wireless communication modulevia the wireless communication capability of the module.

FIG. 14A illustrates still yet another embodiment of a wirelesscommunication module 1400 having a module body 1410 with a first moduleside 1415 and a second module side 1420. Module body 1410 includes onfirst module side 1415 a first pressure connector 1425 and a secondpressure connector 1430. First pressure connector 1425 is shaped, sized,and configured to engage a first port of a camera body to which wirelesscommunication module 1400 may be connected to provide wirelesscommunication capability to the camera body as discussed herein. Secondpressure connector 1430 is shaped, sized, and configured to engage asecond port of a camera body. First pressure connector 1425 is incommunication with a transmitter 1440, which is in communication with anantenna element 1445. A synchronization signal module 1450 is incommunication with transmitter 1440 and first pressure connector 1425.Second pressure connector 1430 is in communication with a powermanagement module 1455. An optional processor 1460 is in communicationwith synchronization signal module 1450 and power management module1455. Processor 1460 may provide information and power management, aswell as other processing functionality, for wireless communicationmodule 1400. In one example, second module side 1420 may include anexternal control 1465 in communication with processor 1460 for settingand/or modifying an internal state of wireless communication module1400. External control 1465 is shown as a dial. External control 1465may additionally, or in substitute, include one or more other externalcontrols.

In another example, second module side 1420 may include an audio element1470 in communication with processor 1460 for providing an audibleindication of a status and/or change of an internal state of wirelesscommunication module 1400. In one example, processor 1460 may provideinstructions and/or an electrical signal to audio element 1470 forproducing an audible indication representing a current status (e.g., acertain number and/or quality of audible indication may provide specificinformation about the state of the module). In another example,processor 1460 may provide instructions and/or an electrical signal toaudio element 1470 for producing an audible indication representing achange in status (e.g., an audible indication may be provided when auser modifies a status with an external control, such as externalcontrol 1465).

In still another example, second module side 1420 may include a visualindicator 1475 in communication with processor 1460 for providing avisual indication of a status and/or change of an internal state ofwireless communication module 1400. Any number and/or combination ofvisual indicators may be included in wireless communication module 1400.Example visual indicators are discussed above.

In a further embodiment, an external control (e.g., external control1465) on a wireless communication module may be configured to be usedalone to communicate with an internal state of the module and/or beconfigured to be used in combination with one or more controls of acamera body to which it is attached. In one example, wirelesscommunication module 1400 may have access to a camera control (e.g.trigger control) of a camera body via one or more of pressure connectors1425, 1430 and a port of the camera body (e.g., a motor-drive port). Insuch an example, external control 1465 may be configured (e.g., viamachine readable instruction associated with processor 1460, such as ina memory) to activate at the same time as (or in a predeterminedsequence with) the camera control (e.g., when a full and/or partialtrigger signal is received via a pressure connector). In one aspect,this may allow a user to control a state, such as channel of operation,of the wireless communication module so that the state does noterroneously change by a single inadvertent button activation. In anotherexample, an external control of a wireless communication module may workin conjunction with a visual indicator. In yet another example, anexternal control includes a visual indicator integrated therewith (e.g.,a pressure sensitive display element, such as a pressure sensitive LEDor LCD).

A wireless communication module (e.g., wireless communication module1400) may utilize an external control to power on and/or off thewireless communication module or one or more aspects of the wirelesscommunication module. In still another example, a wireless communicationmodule may power on by sensing connection to a port of a camera body. Insuch an example, a processor, such as processor 1460 may have associatedtherewith instructions for detecting an information and/or powerprovided via one or more pressure connectors in direct communicationwith one or more ports of the camera body. In still yet another example,a wireless communication module may be configured to have an internalstate modified and/or controlled by one or more camera controls of acamera body to which the module is connected (e.g., a processor, such asprocessor 1460 may include instructions for detecting a signal providedvia one or more pressure connectors in direct communication with one ormore ports of the camera body and to set and/or alter a state of thewireless communication module based on the signal). In a furtherexample, an internal state of a wireless communication module may beindicated by a visual indicator of a camera body to which the wirelesscommunication module is connected. In such an example, a processor, suchas processor 1460, may provide information to a processor of the camerabody via one or more pressure connectors in direct communication withone or more ports of the camera body. The processor of the camera bodymay utilize a visual display element of the camera body (e.g., an LEDand/or LCD display) to display an indication of the wirelesscommunication module status.

FIGS. 15A and 15B illustrate a further exemplary embodiment of awireless communication module 1500 having a module body 1510. It shouldbe noted that although wireless communication module 1500 is shown froman external perspective that it may include internal circuitry (e.g., atransmitter and supporting connecting circuitry) consistent with, and aswill be apparent from, the current disclosure. FIG. 15A shows a firstview of wireless communication module 1500. Module body 1510 includes afirst portion 1515 and a second portion 1520 that are articulateablewith an articulation element 1525. Module body 1510 includes a firstpressure connector 1530 and a second pressure connector 1540. Wirelesscommunication module 1500 also includes an antenna 1550. Module body1510 in FIG. 15A is in a position that allows connection of secondpressure connector 1540 to a port of a camera body by applying pressureto module body 1510 in such a manner as to direct second pressureconnector 1540 into connection with that port. FIG. 15B shows modulebody 1510 in a position after first portion 1515 has been articulatedupward. This movement can allow connection of first pressure connector1530 to a second port on the same side of a camera as the first port. Inone example, second pressure connector 1540 may have a screw connectionthat requires rotation of the entire module body 1510. After screwconnection of second pressure connector 1540 is completed with a firstport, first portion 1515 may be articulated into place to connect firstpressure connector 1530 to a second port. In one example, anarticulating element includes a flexible portion of a module body thatallows the module body to articulate. In another example, a module bodyhaving an articulating element is shaped and configured to articulatesuch that a first pressure connector can connect to a port on one sideof a camera body and a second pressure connector can connect to a porton a second side of a camera body.

FIGS. 16A and 16B illustrate a further exemplary embodiment of awireless communication module 1600. It should be noted that althoughwireless communication module 1600 is shown from an external perspectivethat it may include internal circuitry (e.g., a transmitter andsupporting connecting circuitry) consistent with, and as will beapparent from, the current disclosure. FIG. 16A shows wirelesscommunication module 1600 including a module body 1610 and a firstpressure connector 1620. Wireless communication module 1600 alsoincludes an antenna 1630. First pressure connector 1620 is configured toconnect to a port 1640 of a camera body 1650. FIG. 16B shows wirelesscommunication module 1600 directly connected to camera body 1650 viafirst pressure connector 1620 and port 1640. In one example, port 1640provides first pressure connector 1620 access to one or more internalfunctions/controls including access to an internal power supply ofcamera body 1650 and access to a trigger control of camera body 1650. Inanother example, port 1640 provides first pressure connector 1620 accessto one or more internal functions/controls including access to aninternal power supply of camera body 1650. In yet another example, port1640 provides first pressure connector 1620 access to a synchronizationsignal of camera body 1650 (e.g., for wirelessly transmitting asynchronization signal to a remote device for synchronizing the remotedevice with image acquisition by camera body 1650. In such an example,wireless communication module 1600 may also include an internal powersupply for providing power to the module. Camera body 1650 also includesa lens 1680 attached thereto.

As discussed above, wireless communication can be used for a variety ofpurposes. Examples of uses for a wireless communication module include,but are not limited to, wirelessly controlling the function and/ortriggering of a remote flash, wirelessly controlling the function and/ortriggering of a remote camera, wirelessly controlling the camera towhich the module is connected from a remote device, wirelesslycommunicating information to and/or from a remote device, wirelesslyreceiving information from and/or transmitting information to a remotelight meter and/or color spectrum meter, and any combinations thereof.Any of the embodiments discussed herein may utilize direct connection toa camera body and access to appropriate internal functions/controlsthrough a pressure connector to port connection to accomplish any ofthese and other uses.

FIG. 17 illustrates various examples of wireless communication 1700utilizing one embodiment of a wireless communication module 1710 thathas been positioned with one or more pressure connectors (not shown) indirect communication with one or more external ports of a camera body1715. It should be noted that although wireless communication module1700 is shown from an external perspective that it may include internalcircuitry (e.g., a transmitter, receiver, and supporting connectingcircuitry) consistent with, and as will be apparent from, the currentdisclosure. Wireless communication module may provide camera body 1715with wireless communication to and/or from one or more remote devices,such as a remote camera body 1720, a remote light source 1725, a remotegeneral computing device 1730 (here, shown as a handheld generalcomputing device), a remote light and/or color spectrum meter 1735, andany combinations thereof. Each of the one or more remote devices mayinclude external and/or internal wireless communication capability 1740.Example wireless communication capability, such as wirelesscommunication capability 1740, may include, but is not limited to, awireless communication module according to the current disclosure, aninternal wireless communication module positioned within the remotedevice (e.g., an internal wireless communication module as set forth inwhich is incorporated herein by reference in its entirety), an externalwireless communication module connected via wire to the remote device,an external wireless communication module connected to a hotshoe of theremote device.

In one example, wireless communication module 1710 may receive fromcamera body 1715, and wirelessly communicate to remote camera 1720, aninformation from one or more external ports of camera body 1715. Camerabody 1715 may utilize wireless communication module 1710 to communicatea variety of information to a remote camera, such as camera 1720.Example information for wireless communication to a remote cameraincludes, but is not limited to, a synchronization signal for synchingan image acquisition parameter (e.g., shutter/light synchronization) ofthe remote camera, a trigger release signal, a control signal forcontrolling the remote camera, another image acquisition parameter(e.g., ISO, aperture, shutter speed, desired light exposure value,etc.), a confirmation signal (e.g., response to a previouscommunication, such as a synch signal, and any combinations thereof. Inanother example, wireless communication module 1710 may wirelesslyreceive from remote camera 1720, and communicate to camera body 1715, aninformation related to the operation of remote camera 1720. Exampleinformation for wireless communication from a remote camera includes,but is not limited to, a synchronization signal for synching an imageacquisition parameter (e.g., shutter/light synchronization) of theremote camera, a trigger release signal, a control signal forcontrolling the remote camera, another image acquisition parameter(e.g., ISO, aperture, shutter speed, desired light exposure value,etc.), a confirmation signal (e.g., response to a previouscommunication, such as a synch signal, and any combinations thereof.Remote camera 1720 also includes a lens 1725 attached thereto.

In another example, wireless communication module 1710 may receive fromcamera body 1715, and wirelessly communicate to remote light source1725, an information from one or more external ports of camera body1715. Example information for wireless communication to a remote lightsource includes, but is not limited to a synchronization signal, atrigger signal, an image acquisition parameter, a desired light exposurevalue, a color temperature value, raw color spectrum informationcollected from a color spectrum detector, ISO, aperture, shutter speed,a control signal for operating a remote light source, a poweradjustment, and any combinations thereof. Remote light source 1725 mayinclude a flash light and/or a continuous light. In yet another example,wireless communication module 1710 may wirelessly receive from a remotelight source, such as remote light source 1725, an information (e.g., aconfirmation of light trigger) and communicate the information to camerabody 1715.

In still another example, wireless communication module 1710 may receivefrom camera body 1715, and wirelessly communicate to remote generalcomputing device 1730 (here shown as an exemplary handheld generalcomputer device), information from one or more external ports of camerabody 1715. Example information for wireless communication to a remotegeneral computing device includes, but is not limited to, an imageacquisition parameter, a color temperature value, an exposure value, andany combinations thereof. In still yet another example, wirelesscommunication module 1710 may wirelessly receive from remote generalcomputing device 1730, and communicate to camera body 1715, aninformation related to the operation of remote general computing device1730.

In a further example, communication module 1710 may receive from camerabody 1715, and wirelessly communicate to remote light and/or colorspectrum meter 1735, information from one or more external ports ofcamera body 1715. Example information for wireless communication to aremote light and/or color spectrum meter includes, but is not limitedto, an image acquisition parameter, a desired color temperature value, adesired exposure value, and any combinations thereof. In still yetanother example, wireless communication module 1710 may wirelesslyreceive from remote light and/or color spectrum meter 1735, andcommunicate to camera body 1715, an information (e.g., a colortemperature value, an exposure value, and any combination thereof)related to the operation of remote light and/or color spectrum meter1735.

As discussed above in relation to various embodiments, a wirelesscommunication module, such as wireless communication module 1710 mayobtain information via one or more pressure connectors connected to thecamera to which the module is attached for synchronizing a remote devicewith camera 1715. The information may be used to synchronize a remotedevice, such as a remote lighting device, a remote camera, or remotemeter, to the shutter of the camera to which the module is attached. Inone example, a wireless communication module, such as wirelesscommunication module 1710 may receive a shutter synchronizationinformation via a synchronization port (e.g., a PC connector) of acamera body to which the module is connected. In one example, theshutter synchronization information may be wirelessly communicated to aremote device (e.g., remote camera 1720, remote light source 1725, etc.)for synchronizing the remote device with image capture. In an alternateembodiment, a wireless communication module may use trigger informationor voltage change information (e.g. a voltage change of a camerainternal power source) from a camera port, such as a motor-drive port,and a known time between a trigger signal event and a shutter openingfor a given camera (and/or camera setting) to synchronize the remotedevice via wireless communication. In such an embodiment, a memory maybe utilized in the wireless communication device and/or at the remotedevice to store a known time between trigger signal and a shutteropening. In one example, a processor in a wireless communication modulemay utilize trigger information and voltage change information inconjunction with known timing information stored in a memory todetermine an appropriate time to wirelessly transmit a synchronizationsignal to a remote device. In another example, a wireless communicationmodule may wirelessly communicate received trigger information andvoltage change information to a remote device, which may utilize storedtiming information and a local processor to determine appropriatesynchronization with the image acquisition. In another example, it maybe necessary to factor time for the actual wireless transmission ofinformation between a wireless communication module and a remote device.

In another alternative embodiment, a wireless communication module maymonitor the voltage of an internal camera power supply to which it isconnected via one or more pressure connector. Inclusion of monitoringcircuitry as part of processing circuitry in a wireless communicationmodule allows monitoring for changes indicative of certain internalevents in the camera body. FIG. 18 shows an example plot 1810 of voltageaccessed through an example port of a camera (in this case a motor-driveport of a Nikon D1X camera) versus time. At point 1820 a steep change involtage indicates a trigger event within the camera body. Plot 1830 isof a shutter synchronization output signal for the same camera. Plot1830 at point 1840 indicates shutter opening and at point 1850 shutterclosing. The time between point 1820 and 1840 can be determined and usedreliably to predict the opening of a shutter based on a trigger event.This method of synchronization may be used where a wirelesscommunication module does not have access to a conventional shuttersynchronization signal from within the camera body. One example of thismay be when a wireless communication module has a single pressureconnector that connects to a port without shutter synchronizationsignal, but has access to power. One benefit to such a technique fordetecting shutter synchronization includes a cost reduction ofeliminating an extra connector port on a wireless communication modulefor synchronization, even where a camera body includes a port havingaccess to a synchronization signal.

In another example, a voltage output change from a camera body may beuniquely related to internal activity of a camera body. Internalactivity, such as the start of a mirror opening, the stop of a mirroropening, first shutter movement, and/or subsequent shutter movement maycause signature voltage spikes that may be reliably used to predict ashutter opening. Thus, the predicted shutter opening could be used tosynchronize a remote device via wireless communication using a wirelesscommunication module, such as wireless communication module 1710.Voltage activity from the internal power supply may be compared byproper circuitry within a wireless communication module to one or morestored voltage signatures (possibly in a memory of the wirelesscommunication module) to determine an internal event indicative of ashutter opening.

In another example, a voltage output change from the camera body may beused to gain extra time prior to the shutter opening for sendingredundant signals that contain time stamps as to when the shutter willbe open in the very near future. This extra time can enable a zero delayremote shutter synchronization. For example, if a specific voltage eventindicates that the shutter will be open in exactly 28 milliseconds, thewireless communication module may send a signal to the remote flashdevice to activate in 28 milliseconds less the amount of time it tookfor wireless communications to complete. This zero delay system isunique and is not used by any current wireless system.

In a further example, a wireless communication module may include anaudio reception device, (e.g., a microphone), to receive audio signalsfrom within a camera body. A camera body may produce signature audiowaves that are a function of particular events that occur within thecamera body. For example, a mirror slapping open (or other internalevent) may produce unique audio of a predictable wavelength and/oramplitude that can be monitored by an audio reception device of awireless communication module. The measured audio may be compared to oneor more stored audio signatures (possibly in a memory of the wirelesscommunication module) to determine an internal event indicative of ashutter opening. Because of the time required for audio to travel from acamera body to an audio reception device, it may be important tomaintain a fixed known distance between the camera body and the audioreception device.

FIG. 19 illustrates still yet another embodiment of a wirelesscommunication module 1900 having a module body 1910. Wirelesscommunication module 1900 includes a first pressure connector 1920 and asecond pressure connector 1925. First pressure connector 1920 is incommunication with a synchronization module 1930, which in turn is incommunication with a processor 1935. Second pressure connector 1925 isin communication with a power management module 1940, which in turn isin communication with processor 1935. Processor 1935 is in communicationwith a transmitter 1945 and an antenna 1950 for wirelessly communicatingwith a remote device. Wireless communication module 1900 also includesan audio reception device 1955 (e.g., a microphone), which is incommunication with audio circuitry 1960 connected to processor 1935 forproviding audio information detected by audio reception device 1955 toprocessor 1935. When processor 1935 receives audio information, it maycompare that information to known audio values for a camera 1962 towhich wireless communication module 1900 may be attached via one or moreof first and second pressure connectors 1920, 1930 and one or moreexternal ports 1965, 1970 of camera 1960. Known audio values may bestored in, and accessed from, a memory 1975 in communication withprocessor 1935.

As discussed above, known times between certain internal events andshutter activity may be used in conjunction with voltage and audioactivity to predict shutter activity timing. FIG. 20 illustrates ahypothetical plot 2010 of a voltage signature over time for a powersupply of an exemplary camera. Plot 2010 includes various peaksindicative of internal activity. For example, peak 2020 may represent amirror starting to open, peak 2030 may represent a mirror stopping, peak2040 may represent a first shutter movement, and peak 2050 may representa second shutter movement. Plot 2060 represents a hypothetical audiosignature over time for the same camera. Plot 2060 includes variouspeaks indicative of internal activity. For example, peak 2070 mayrepresent the mirror stopping movement, peak 2080 may represent a firstshutter activity, and peak 2090 may represent a second shutter activity.

A wireless communication module according to the various embodimentsdiscussed herein may include a memory in order to facilitate the storageof information, such as information related to known times betweentrigger and shutter activity, voltage signatures for one or morecameras, signal encryption, channel settings, processing instructions,and any combinations thereof.

FIG. 21 illustrates a further embodiment of a wireless communicationmodule 2110 directly connected to a camera body 2120. It should be notedthat although wireless communication module 2110 is shown from anexternal perspective that it may include internal circuitry (e.g., atransmitter, receiver, and supporting connecting circuitry) consistentwith, and as will be apparent from, the current disclosure. Wirelesscommunication module 2110 is shown in direct connection with a PC portand a motor-drive port (both not shown in this view) of camera 2120 viaa first and second pressure connectors of wireless communication module2110. A wireless communication module according to the variousembodiments discussed herein, such as wireless communication module 2110may come into direct communication with external ports of camera, suchas camera 2110, in a variety of ways that will be apparent from thecurrent disclosure to one of ordinary skill. In one example, a wirelesscommunication module, such as module 2110, may include one or morepressure connectors that provide direct physical connection of thewireless communication module with a camera at one or more externalports of the camera body. In another example, a wireless communicationmodule, such as module 2110, may include one or more pressureconnectors. A first pressure connector may be directly connected to oneexternal port of a camera body and a second pressure connector may bedirectly connected to a second external port of a camera body.Additional ports and connectors may optionally be utilized. In yetanother example, a wireless communication module, such as module 2110,may be removably directly connected to one or more external ports of acamera body, such as camera 2120, via one or more pressure connectors.In still another example, a wireless communication module, such asmodule 2110, may include two or more pressure connectors. A body of thewireless communication module may be moved toward a two or more externalports of a camera body and simultaneously engaging the two or morepressure connectors of the wireless communication module with the two ormore external ports providing communication between a transmitter of thewireless communication module and the external ports.

Information and/or power may be provided to a wireless communicationmodule and/or information may be provided to a camera from a wirelesscommunication module according to any of the above discussed examples.Wireless communication module 2110 also illustrates an example shape andconfiguration that does not interfere with utilization of externalcamera controls, including the ability to change a lens without removingwireless communication module 2110.

FIG. 22 illustrates two examples of ports on two different camerabodies. Camera body 2210 includes a first port 2220 and a second port2230, each having a center axis 2222 and 2232, respectively. Camera body2250 includes a first port 2260 and a second port 2270, each having acenter axis 2262 and 2272 respectively. First and second ports 2220 and2230 are positioned at a different distance from each other andconfigured at different angles from each other than first and secondports 2260 and 2270. First port 2220 and second port 2230 each have acenter axis 2222 and 2232 that are spaced a first distance 2225 fromeach other. First port 2260 and second port 2270 each have a center axis2262 and 2272 that are spaced a second distance 2265 from each other. Inthis example, first distance 2225 is about 22 millimeters (mm). Thus, acorresponding example wireless communication module may have first andsecond pressure connectors with center axes that are about 22 mm apart.In this example, second distance 2265 is about 22.5 mm. Thus, acorresponding example wireless communication module may have first andsecond pressure connectors with center axes that are about 22.5 mmapart. In one example, a distance between a first and second pressureconnectors of a wireless communication module may be variable indistance and configuration (e.g. angle, rotation, etc.) to allowconnectivity with a variety of camera bodies. In another example, firstand second pressure connectors of a wireless communication module eachhave a center axis and the center axis of the first pressure connectoris spaced a distance from the center axis of the second pressureconnector where that distance is a distance from about 20 mm to about 24mm. A module body may be of any of a variety of sizes and shapes with avariety of configurations and distances between depression connectors,the above values are only indicative of select examples. Camera bodies2210 and 2250 indicate that a single example wireless communicationmodule with moveable depression connectors may be utilized to connect totwo or more different camera bodies (e.g., see wireless communicationmodules 900 and 1000 of FIG. 9 and FIG. 10, respectively.

FIG. 22 also illustrates the limited space on some camera bodies for awireless communication module to connect to ports on a camera bodywithout obstructing external camera controls, including not restrictingthe ability to remove and/or change lens 2248. Camera body 2210 includesexternal camera controls 2242 and 2244. Camera body 2210 also includeslens 2248. Some camera bodies may also have a flash mounted above thelens. Camera body 2260 includes external camera controls 2282, 2284, and2286; and lens 2288. As discussed above, a module body and/or antennamay be of any shape, size, and/or configuration to suit a particularcamera body.

In another embodiment, a method of modifying a camera to allow thecamera to wirelessly communicate with a remote device is provided. Awireless communication module having one or more pressure connectorsaccording to the various embodiments discussed herein may be connectedto one or more ports of the camera.

In yet another embodiment, a method of communicating between a cameraand a remote device is provided. A wireless communication module havingone or more pressure connectors according to the various embodimentsdiscussed herein may be connected to one or more ports of the camera.The wireless communication module may utilize a transmitter, receiver,and/or transceiver within the module body and connections made betweenthe one or more pressure connectors and the one or more ports tocommunicate information to or from the remote device. Communication ofinformation may include controlling the remote device and/or controllingthe camera from the remote device.

Exemplary embodiments have been disclosed above and illustrated in theaccompanying drawings. It will be understood by those skilled in the artthat various changes, omissions and additions may be made to that whichis specifically disclosed herein without departing from the spirit andscope of the present invention.

What is claimed is:
 1. A method of synchronizing a remote lightingdevice to image acquisition by a camera body, the method comprising:detecting a predictor signal of the camera body via an external port ofthe camera body, the predictor signal occurring at a known time prior toa shutter of the camera body opening; determining a synchronization timefor synchronizing a remote lighting device, said determining includinguse of the predictor signal and an amount of time between the predictorsignal and the shutter opening; wirelessly communicating asynchronization information to the remote lighting device after saiddetecting a predictor signal; and synchronizing the remote lightingdevice to image acquisition at the synchronization time, wherein (a)said determining occurs before said wirelessly communicating and thesynchronization information includes a synchronization signal or (b)said determining occurs after said wirelessly communicating and thesynchronization information includes information based on the predictorsignal for use in said determining.
 2. A method according to claim 1,wherein the predictor signal is a change in an internal power supply ofthe camera body.
 3. A method according to claim 1, wherein the predictorsignal is related to an internal activity of the camera body.
 4. Amethod according to claim 1, further comprising using a predictiveinformation stored in a memory in said determining a synchronizationtime, the predictive information including information related to thetime between the predictor signal and the shutter opening.
 5. A methodaccording to claim 1, wherein the synchronization time is based on thetime required for wireless communication and the time between thepredictor signal and the shutter opening.
 6. A method according to claim1, further comprising receiving a remote signal from a light meterpositioned remotely from the camera body and communicating the remotesignal to the camera body.
 7. A method according to claim 1, whereinsaid synchronizing includes activating the remote lighting device at atime that the shutter of the camera body is open.
 8. A method accordingto claim 1, wherein said synchronizing includes activating the remotelighting device at a time that a synchronization output signal isgenerated by the camera body.
 9. A method according to claim 1, whereinsaid wirelessly communicating is performed using a wirelesscommunication module external to the camera body.
 10. A method accordingto claim 9, wherein the wireless communication module does not haveaccess to a conventional synchronization signal of the camera body. 11.A method according to claim 9, wherein the wireless communication moduleincludes: a module body; a wireless communication circuit; a firstconnector in communication with said wireless communication circuit,said first connector for connecting said module body to a port of thecamera for detecting the predictor signal; and an antenna incommunication with said wireless communication circuit for wirelesslycommunicating with the remote lighting device.
 12. A system forsynchronizing a remote lighting device to image acquisition by a camerabody, the system comprising: a means for detecting a predictor signal ofthe camera body via an external port of the camera body, the predictorsignal occurring at a known time prior to a shutter of the camera bodyopening; a means for determining a synchronization time forsynchronizing a remote lighting device, said determining including useof the predictor signal and an amount of time between the predictorsignal and the shutter opening; a means for wirelessly communicating asynchronization information to the remote lighting device after saiddetecting a predictor signal; and a means for synchronizing the remotelighting device to image acquisition at the synchronization time,wherein (a) said determining occurs before said wirelessly communicatingand the synchronization information includes a synchronization signal or(b) said determining occurs after said wirelessly communicating and thesynchronization information includes information based on the predictorsignal for use in said determining.
 13. A system according to claim 12,wherein the predictor signal is a change in an internal power supply ofthe camera body.
 14. A system according to claim 12, wherein thepredictor signal is related to an internal activity of the camera body.15. A system according to claim 12, further comprising a means for usinga predictive information stored in a memory in said determining asynchronization time, the predictive information including informationrelated to the time between the predictor signal and the shutteropening.
 16. A system according to claim 12, wherein the synchronizationtime is based on the time required for wireless communication and thetime between the predictor signal and the shutter opening.
 17. A systemaccording to claim 12, further comprising a means for receiving a remotesignal from a light meter positioned remotely from the camera body and ameans for communicating the remote signal to the camera body.
 18. Asystem according to claim 12, wherein said means for synchronizingincludes a means for activating the remote lighting device at a timethat the shutter of the camera body is open.
 19. A system according toclaim 12, wherein said means for synchronizing includes a means foractivating the remote lighting device at a time that a synchronizationoutput signal is generated by the camera body.